<template>
    <div>
         <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>商品管理</el-breadcrumb-item>
          <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="handleCurrentChange(1);getGoodsList" ></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- table表格区域 -->
            <el-table :data="goodslist" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="110px" align="center"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="100px" align="center"></el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="180px" align="center">
                    <template slot-scope="scope"> 
                        <!-- 调用时间过滤器 -->
                        {{scope.row.add_time | dataFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="200px" align="center">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)">删除</el-button>
                    </template>
                </el-table-column>
            </el-table> 

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
             :page-sizes="[1, 5, 10, 20]"   :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //查询参数对象
            queryInfo:{
                query:'',
                pagenum: 1,
                pagesize : 10
            },
            //商品列表
            goodslist: [],
            //总数据条数
            total:0 ,  
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        //根据分页获取对应相应商品列表
        async getGoodsList(){
         const { data:res } = await this.$http.get('goods', { params:this.queryInfo })
         if(res.meta.status !== 200 ){
            return this.$message.error('获取商品列表失败!')
         }
         //this.$message.success('获取商品列表成功!')
         this.goodslist = res.data.goods
         this.total = res.data.total
        },

        //
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        //
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        //根据ID删除商品
        async removeById(id){
         const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
         }).catch(err => err)
          if(confirmResult != 'confirm'){
              return this.$message.info('已取消删除！')
          }

          const { data:res } = await this.$http.delete(`goods/${id}`)
          if(res.meta.status !=200 ){
              return this.$message.error('删除商品失败！')
          }
          this.$message.success('删除商品成功!')
          this.getGoodsList()
        },
        //添加商品界面
        goAddPage(){
            this.$router.push('/goods/add')
        }
    },
}
</script>

<style lang="less" scoped>
.el-pagination {
    margin-left:25%;
}
</style>

